Planet Ross 458 (AB) c

Detailed information about planet Ross 458 (AB) c and its parameters.

Planet

Name
Ross 458 (AB) c
Planet Status
Confirmed
Discovered in
2010
Mass
Mass*sin(i)
Semi-Major Axis
Orbital Period
Eccentricity
ω
Tperi
Radius
Inclination
Update
2024-03-24
Detection Method
Imaging
Mass Detection Method
Radius Detection Method
Primary transit
Secondary transit
λ
Impact Parameter b
Time Vr=0
Velocity Semiamplitude K
Calculated temperature
Measured temperature
Hottest point longitude
Geometric albedo
Surface gravity log(g/gH)
Alternate Names
Ross 458C, HIP 63510C, WISEPC J130041.65+122114.6
Data Source Type Result Value Result Figure Notes Reference
Molecule Data Source Type Result Value Result Figure Notes Reference
CH4
Measurements Detected 2010 - BURGASSER A.
H2
Measurements Detected 2010 - BURGASSER A.
H2O
Measurements Detected 2010 - BURGASSER A.
K
Measurements Detected 2010 - BURGASSER A.

Note: the values of radius, mass, log(g) and effective temperature are given by the average of the results of Dupuy & Kraus (2013) computed for the ages of 180 and 800 Myr. The error is simply the deviation between the two values (the deviation is 20K for the effective temperature and 0.25 for log(g) ).

Note: there is agreement that the spectrum is best reproduced by models with clouds. Morley et al. (2012) propose sulfite clouds with fsed=3, expected in T dwarfs conditions.

(Burningham et al. 2011): spectral type T8.5p±0.5 (where p stands for peculiarity, in this case an unusually enhanved K band flux).

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Star

Name
Ross 458 (AB)
Distance
Spectral type
M0.5
Apparent magnitude V
9.76
Mass
Age
Effective temperature
Radius
Metallicity [Fe/H]
Detected Disc
Magnetic Field
RA2000
13:00:47.0
Dec2000
+12:22:33.0
Alternate Names
DT Virginis, HIP 63510, GI 494

Binary star. The secondary component has a M7.5 spectral type with mass 0.06-0.09 Msun. The two red dwarfs are separated by 5 AU and orbit with a period of 14.5 yr.

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